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Draining and refilling ASHP.

 
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Last Post by Jancold 1 year ago
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Jancold
 Jancold
(@jancold)
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Joined: 3 years ago
Posts: 171
Topic starter 13/10/2024 1:24 pm  

My install is months away but I am intending to make a few radiator changes in the bedrooms and wondering whether to do them beforehand or after the install in the summer? 

Draining and refilling my present system  is reasonably straightforward as it will be the upstairs rads only and I have some Fernox to replace what is lost but when the heat pump is in how much does water quality matter? Is it OK to refill and top up directly from the mains as at present? It will be water only, no glycol.

I live in the area supplied by South West Water which is from boreholes and subsequently hard (some kettle furring). At present our water has a TDS (total dissolved solids ) of 230. 

My homebrew group got the following water report  from SWW  Ca2+ 65 Mg2+13 Na+ 10 Cl+32 So42- 20 Hco3- 193. if that helps.


Daikin 6Kw ASHP.
MG4 EV, Solis 8KW inverter, 32KWh battery
1926 Semi with loft and wall cavity insulation, all radiator.


   
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Majordennisbloodnok
 Majordennisbloodnok
(@majordennisbloodnok)
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Joined: 4 years ago
Posts: 1629
13/10/2024 4:05 pm  

Posted by: @jancold
↑

...

My homebrew group got the following water report  from SWW  Ca2+ 65 Mg2+13 Na+ 10 Cl+32 So42- 20 Hco3- 193. if that helps.

Only on this forum! Managing to combine self-help plumbing with home brewing is absolute class. "Chapeau", as they say...

Sadly, I have no idea what the answer is, but couldn't pass up the opportunity to show a bit of respect.

 


105 m2 bungalow in South East England
Mitsubishi Ecodan 8.5 kW air source heat pump
18 x 360W solar panels
1 x 6 kW GroWatt battery and SPH5000 inverter
1 x Myenergi Zappi
1 x VW ID3
Raised beds for home-grown veg and chickens for eggs

"Semper in excretia; sumus solum profundum variat"


   
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Jancold
 Jancold
(@jancold)
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Posts: 171
Topic starter 13/10/2024 9:08 pm  

@majordennisbloodnok If I only had a batter pudding, sadly I am only an underfloor eating defective ( apologies to Spike and the Goon show)


This post was modified 1 year ago by Jancold

Daikin 6Kw ASHP.
MG4 EV, Solis 8KW inverter, 32KWh battery
1926 Semi with loft and wall cavity insulation, all radiator.


   
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 Anonymous 5011
(@Anonymous 5011)
Joined: 3 years ago
Posts: 562
17/10/2024 4:39 pm  

Your heat pump will give you a water spec to follow. For reference this is what mine says

Screenshot 2024 10 17 17 38 46 03 e2d5b3f32b79de1d45acd1fad96fbb0f


   
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Jancold
 Jancold
(@jancold)
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Joined: 3 years ago
Posts: 171
Topic starter 17/10/2024 5:03 pm  

@johnmo Thank you. I'll hope to find it in the Daikin installers manual.


Daikin 6Kw ASHP.
MG4 EV, Solis 8KW inverter, 32KWh battery
1926 Semi with loft and wall cavity insulation, all radiator.


   
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